Burner for explosive gas mixtures.



H. HIRSCHWBH. BURNER POR EXPLOSIVE GAS MIXTUBBS.

APPLICATION FILED JAN. 21, 1908.

Patented Dec. 29, 1908 HERMANN nmscnwna or BERLIN, GERMANY. nimma son'expresiva 'exs frx'rrmael Specification of Letters iPa'tent.

Patented Dec. 29, 1,908.

. applicati@ mea January 21, 1oos. serialize-111,934. l

To all whom 'it may concern:

Be it known that I, HERMANNv Hrnsonwnn, a subject of the King ofPrussia, and a citizen of the German Empire, residing at Berlin, in ltheKingdom of Prussia and .German Enipire, have invented new and usefulImprovements in Burners for Explosive Gas Mixtures,

i p assed through the nozz of which the following is a specification.This-invention relates to a burner which is worked with a mixture ofoxygen, air or the like and a combustible gas, and inwhich the oxygen orthe air flows under pressure through a nozzle. The nozzle can be`adjusted or'changed so that in the same burner various quantlties of oxgen or air can be le. In this burner the oxygen or the air, which flowsthrough the nozzle, draws in thel combustible gas'.` The inlet for thecombustible gas is, in this burner, usually connected with thestationary gas pipe or with the gas generating apparatus by a exibletube. g Inmany burners the pipe leading from the inlet for the com-4bustible gasto the suction chamber of the nozzle is divided into severaltubes arranged side by side; and the present invention consists inarrangements whereby, in such'burners, the said several tubes can beseparately closed.v For this' purpose all the said tubes mai be openedor closed by one and the same coc which is so arranged that it cancloseall the tubes simultaneously or leave any number of them open..

-The above arrangement in combination with the adjustable or changeableinjectornozzle renders it possible to work the burner for all requiredsizes of flame with the best .proportion of mixture of oxygen or air andcombustible gas, so 'that the employment of a number of burners forvarious I purposes becomes unnecessary.4

The drawing shows a preferable waylofconstructing the burner.

The burner has the. usual mouth-piece '5 and the known adjustable andchangeable injector-nozzle 6 working with oxygen, comressed air or thelike. The mouth-piece-5 can e changed if required for thev various gaspressures-employed and the adjustments of the nozzle. The oxygen flowsthrough the pipe .7 to the pressure chamber 8.

The combustible material is led to the burner through the pipe 9, forthe greates't effect from any availab e source. Thel pipe 9 opens into achannel 11 running'round the body 10,'of the cock, which channellikewise,

. bustible affords a ypassage for the quantity of comgas whichcorresponds to the highest e ect.

has also a tra ezium lshaped opening 14 which is shown by dotted linesin the development of the cock, Fig. 4. The cock-body 15 can be closed atogether and opened separately one after the other lby turning the cock,plug 12. In the intermediate positions -of The cock plug 12 is hollowand has av hole 13 corresponding to the channel 11. It

- 10 contains a number, in the case illustrated six, of through o enings15 which are arranged in a spiral ine. Ation of the openings 15 aii'ordsthe necessary the cock plug 12 these openings give assage step by step rthe quantities of com ustible required for smaller and .medium effectsof the burner, without throttling the gas. The spring 18 retains thecock in its various posi'- tlons. The through openin s 15 communicatewith the pipes 416 which ead to the mixing Chamber 17 ofthe injector.

The whole burner can be made of magnalium or other light strongmaterial.

A special advantage of the construction shown is facility for cleaninthrough which the combustib ev flows.l

The burner issuitable, among other purposes, for ,soldering-and brazing,and can be the passages worked with the greatest variety of gaseouscombustibles; vfor example hydrogen, acetyllene, illuminatinggas, orvaporized gasolene.

I clalm: V 1. A burner for explosive' gas-mixtures comprising a mixingchamber, a nozzle leading mt'o said mixing chamber, means for changingthe passage l'through said nozzle from the said mixing chamber to theatmosphere, a combustible gas inlet, a plurality of ipes leading fromthe said inlet of the com- Eustible gas to the mixing chamber, and means.for separately closing said pipes and preserving the ori'gmal gaspressure in the open Apipes.-

2. burner for explosive gas-mixtures com rising a mixing chamber, anadjustable nozz e leading into saidmixin chamber,'a combustible gas'inlet, a plura ity of pipes leading from 'the' inlet of the combustiblegas to the mixing chamber, and means for separately closing said pipesand preserving the original as pressure in theppen pipes.

3; A urner for explosive gas-mixtures xgomprising a mixing chamber, anozzle leadmgmto said mixing chamber, means for

